Umbrella top



FIG. 1 is a front, side and top perspective view of an umbrella top, showing our new design;

FIG. 2 is a front view thereof, with the rear view being identical;

FIG. 3 is a side view thereof, with the opposite side view being identical; and,

FIG. 4 is a top view thereof. 

CLAIM The ornamental design for an umbrella top, as shown and described. 